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白藜芦醇通过AKT/NRF2途径抑制铁死亡来减轻抑郁样行为。

Resveratrol alleviates depression-like behaviors by inhibiting ferroptosis via AKT/NRF2 pathway.

作者信息

Li Chen, Ge Hailong, Huang Junjie, Si Lujia, Sun Limin, Wu Lan, Xiao Ling, Xie Yinping, Wang Gaohua

机构信息

Department of Psychiatry, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, China.

Department of Psychiatry and Institute of Neuropsychiatry, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, China.

出版信息

Brain Res Bull. 2025 Jan;220:111136. doi: 10.1016/j.brainresbull.2024.111136. Epub 2024 Nov 20.

Abstract

Major depressive disorder (MDD) is common, and successful treatment remains challenging. Resveratrol, a naturally occurring polyphenol, has been shown to alleviate depression-like behaviors, but the underlying mechanisms remain unclear. We previously developed a new model of depression by inducing hippocampal ferroptosis in rats, suggesting that ferroptosis may be involved in the development of MDD. Here, we further explored the antidepressant-like effect of resveratrol and its association with ferroptosis. Male rats were exposed to chronic unpredictable mild stress (CUMS), with or without resveratrol, followed by comprehensive behavioral testing. In PC12 cells in vitro, LY294002 (an AKT inhibitor) and ML385 (an NRF2 inhibitor) were used to elucidate the involvement of AKT/NRF2 signaling in resveratrol-mediated ferroptosis. mRNA and protein levels of AKT/NRF2 pathway and ferroptosis-related targets were measured. Ferroptosis was quantified by measuring malondialdehyde (MDA), glutathione (GSH), and Fe content and superoxide dismutase (SOD) activity. Resveratrol ameliorated depression-like behaviors in rats, simultaneously restoring AKT/NRF2 pathway and ferroptosis-related targets in the hippocampus downregulated by CUMS. Elevated markers of oxidative stress in plasma were attenuated by resveratrol. Furthermore, erastin induced ferroptosis and inhibited AKT/NRF2 signaling in PC12 cells, which was counteracted by resveratrol. Additionally, the impact of resveratrol on erastin-induced ferroptosis was reversed by LY294002 and ML385. This study demonstrates that resveratrol ameliorates depression-like behaviors by inhibiting ferroptosis via the AKT/NRF2 pathway.

摘要

重度抑郁症(MDD)很常见,成功治疗仍具有挑战性。白藜芦醇是一种天然存在的多酚,已被证明可减轻抑郁样行为,但其潜在机制尚不清楚。我们之前通过诱导大鼠海马铁死亡建立了一种新的抑郁症模型,表明铁死亡可能参与了MDD的发生发展。在此,我们进一步探讨了白藜芦醇的抗抑郁样作用及其与铁死亡的关系。雄性大鼠接受慢性不可预测轻度应激(CUMS),给予或不给予白藜芦醇,随后进行综合行为测试。在体外PC12细胞中,使用LY294002(一种AKT抑制剂)和ML385(一种NRF2抑制剂)来阐明AKT/NRF2信号通路在白藜芦醇介导的铁死亡中的作用。检测AKT/NRF2通路和铁死亡相关靶点的mRNA和蛋白水平。通过测量丙二醛(MDA)、谷胱甘肽(GSH)、铁含量和超氧化物歧化酶(SOD)活性来定量铁死亡。白藜芦醇改善了大鼠的抑郁样行为,同时恢复了被CUMS下调的海马中AKT/NRF2通路和铁死亡相关靶点。白藜芦醇减轻了血浆中氧化应激标志物的升高。此外,埃拉斯汀诱导PC12细胞发生铁死亡并抑制AKT/NRF2信号通路,而白藜芦醇可抵消这种作用。此外,LY294002和ML385逆转了白藜芦醇对埃拉斯汀诱导的铁死亡的影响。本研究表明,白藜芦醇通过AKT/NRF2通路抑制铁死亡来改善抑郁样行为。

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